3.2.2 I/O Connector Signal Description

Table 3.1: I/O Connector Signal Description

Signal

Reference

Direction

Description

Name

 

 

 

 

 

 

 

IDI<0~7>

ICOM

Input

Isolated Digital Input Channels

 

 

 

 

ICOM

--

--

Common Port of IDI Channels

 

 

 

 

IDO<0~7>

OCOM

Output

Isolated Digital Output Channels

 

 

 

 

OGND

--

--

Isolated Digital Output Ground

 

 

 

 

OCOM

--

--

Positive External Power Supply

 

 

 

 

AI<0~7>

--

Input

Analog Input Channels

 

 

 

 

CJC+/CJC-

--

--

Cold Junction Compensation

 

 

 

 

NC

--

--

No connected

 

 

 

 

3.2.3 LED Indicator Status Description

The USB Module is equipped with a LED indicator to show the current status of the device. When you plug the USB device into the USB port, the LED indicator will blink five times and then stay lit to indicate that it is on. Please refer to the following table for detailed LED indicator status information.

Table 3.2: LED Indicator Status Description

LED Status

Description

 

 

ON

Device ready for work

 

 

Off

Device not ready to work

 

 

Slow Blinking (5 times)

Device Initialization

 

 

Fast Blinking

Device working

(Depends on data transfer speed).

 

 

 

USB-4718 User Manual

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Advantech 4718 user manual 2 I/O Connector Signal Description, LED Indicator Status Description